With a lawsuit hanging over his head, Noel Gallagher has admitted he lied about some of the details surrounding Oasis' split in 2009. In a webchat on Monday, Noel conceded that brother Liam had laryngitis – and not just a hangover – when he cancelled what would have been their final gig, at the Chelmsford V festival.

"For the record, it is a fact that he was diagnosed with laryngitis and it is a fact that he had a doctor's note to prove it," Noel said. While this may seem like a petty detail, the laryngitis issue is serious. Liam said last week that he was suing his brother over the hangover "lie". The claim "[went] way beyond rock'n'roll banter and questioned my professionalism", Liam told the Sun. "I tried to resolve this amicably but have been left with no choice but legal action. All I want is an apology."

Noel has now said sorry. "If he gets offended by my opinions on such things then, you know, I apologise," he said. "But it's all getting very silly and a little bit out of hand and it's not very cool. But there you go."

In a separate interview, with BBC 6 Music's Steve Lamacq, Noel also confirmed he would be singing Oasis songs on his forthcoming solo tour. "I don't really see them as Oasis songs now," he said. "I wrote those songs myself, they are my songs." He did acknowledge that he "couldn't do" tracks such as Supersonic, Champagne Supernova and Lila. "The more rock ones I would never attempt to do because Liam had such a great rock voice. [It] is a shame those songs will never be heard for the foreseeable future."